this is the list of all the parts for my pc build (excluding os and 7200rpm hdd). Im also planning on having 2 r9 270x's eventually. Have i chosen decent parts? What kind of wattage will i need to power this build? thanks in advance https://www.pccasegear.com/index.php?main_page=wish_lists&wlcId=412432&action=wish_lists